H3C S5120-EI Series Configuration Manual

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H3C S5120-EI Series Configuration Manual Manual pdf 32 page image

24CAUTION:Excluding a VLAN interface and its Layer 2 ports from the shutdown action introduces IP collision risksbecause the VLAN interface might be active on both the IRF fabric in Active state and the IRF fabric inRecovery state.By default, all ports except the console and physical IRF ports automatically shut down when the IRFfabric transits to the Recovery state.You can exclude a port from the shutdown action for management or other special purposes. Forexample:• Exclude a port from the shutdown action, so you can Telnet to the port for managing the switch.• Exclude a VLAN interface and its Layer 2 ports from the shutdown action, so you can log in throughthe VLAN interface.To configure a port to not shut down when the IRF fabric transits to the recovery state:Step Command Remarks1. Enter system view. system-view N/A2. Configure a port to not shutdown when the IRF fabrictransits to the Recovery state.mad exclude interface interface-typeinterface-numberBy default, when an IRF fabrictransits to the Recovery state, allits network ports but the IRFphysical ports and console portare shut down.Recovering an IRF fabricAfter the failed IRF link between two split IRF fabrics is recovered, log in to the Recovery-state IRF fabric,and use the reboot command to reboot all its members. After these member switches join the Active-stateIRF fabric as subordinates, IRF merge is complete, as shown in Figure 10.Figure 10 Recovering the IRF fabricIf the Active-state fabric has failed, for example, because of device or link failures, before the IRF link isrecovered (see Figure 11), use the mad restore command on the Recovery-state fabric to change its stateto Active for forwarding traffic. After you repair the IRF link, the two parts merge into a unified IRF fabric.